i have a kicker iq 1000.1 amp at 2ohms its rated at 1000watts rms. I have two kicker subs, dvc 2ohms. I was able to wire them up so I have a final impedance of 2.5ohms. when I connect the speakers to the amp the final impedance drops down to 1ohm or less sometimes. this is causing my amp to go into protection mode. is this common? if someone can clarify this or give me some insight on this I would greatly appreciate it.